Time-stratified sampling of sediment for estimating suspended load is introduced and compared to selection at list time (SALT) sampling. Both methods provide unbiased estimates of load and variance. The magnitude of the variance of the two methods is compared using five storm populations of suspended sediment flux derived from turbidity data. Under like conditions, the SALT coefficient of varia...

Attaining autonomous flight is an important task in aerial robotics. Often flight trajectories are not only subject to unknown system dynamics, but also to specific task constraints. We are interested in producing a trajectory for an aerial robot with a suspended load that delivers the load to a destination in a swing-free fashion. This paper presents a motion planning framework for generating ...

A stormwater management system utilizing the mechanisms of sedimentation and filtration/infiltration was developed and constructed for the immobilization of suspended solids and heavy metal constituents (Fe, Zn, Pb, Cr, Cu, Cd, Ni) in runoff. Monitoring took place between May 2010 and November 2012 on a total of 24 storm events. This research on the fractionation of heavy metals in runoff and d...

The observation of peak flows into river or stream system is not straight forward but complex function of hydrology and geology. Accurate suspended sediment prediction in rivers is an integral component of sustainable water resources and environmental systems modeling. Agricultural fields’ fertility decays, rivers capacity decreases and reservoirs are filled due to sedimentation. The observatio...

A geometric control is proposed for the trajectory-tracking of a quadrotor unmanned aerial vehicle with suspended load. The plant to be controlled modelled by using Euler–Lagrangian equations, and it linearised around zero swing angles load are supposed unmeasurable, they estimated state observer. controller design in inner–outer loop framework, where outer basically implemented internal model ...